Flush out fitting



Aug. 29, 1933. H, H. HOUSE FLUSH OUT FITTING Filed Jan. 6, 1932'ATTORNEY n EY 1,924,498 FLSH our 'Frr'rINcrV Y Hiram Hammond House, ElI"'aso, rTel1vr'.l I applicati@ Januaryt, 1932. serial No. 585,121

2 claims; (criss-22) The object of the invention is to provide a fittingfor use in conjunction with plumbing ixtures as an element of the wastepipe, so that any stoppage in the latter may be dislodged and trans- `lferred to the sewer by the diversion of the pressure from the serviceline into the waste pipe; to provide a fitting including a gate Valvewhich will be automatically moved to closed position in the event ofstoppage in the waste pipe; and generally to provide a device ofthe kindindicated which is of simple form, susceptible of cheap manufacture andof a character that may be readily installed.

With this object in view, the invention consists in a construction andcombination of parts kof which a preferred embodiment isillustrated inthe accompanying drawing but to which embodiment the invention is not tobe restrictedfurther than the limitations prescribed by the appendedclaims.

In the drawing:

Figure 1 is an elevationalview showing the in`y vention applied inoperative connection with a sink. A Y y Figure 2 is an enlargedelevational view show- 25 ing the fitting detached. Y

Figure 3 is a central vertical sectionalvievv. AFigure 4 is a transverse.sectionalrview on the plane indicated by theline 4 4 of Figure 2.

Figure 5 is a transverse sectional view Aon the plane indicated by theline 5-5 bof Figure.

While the inventionv may be constructed for use` withV eitherlwrought orgalvanizediron pipe, in which case it will be threaded atits oppositeends to act as a coupling member for'pipesections, it may also beconstructed as a cast iron tting in which case the tubular body 10` willbe Vformed with a conventional bell ll at one end and hub 12 at theother end, k'so that it'may be calked tothe pipe sections constitutingthe Waste line 14, indi.

mediate point in its length, the tubular body is formed with a'chamberedlateral enlargementrl in which is received a gate or ap valve 16 swinganinternally threadedlateral leg to which the cated in Figure 1 of thedrawing. At an interout operation takes place.

`ingly mounted on a hinge rod 17 extending-1 waste connection 21 of thesink 22, orother'" plumbing'iixture, may be connected. 3 Y The-gate.valve 16 may or maynot be provided with a Water-tight air chamber 23,but if provided with the latter, as indicated in the drawing,

this air chamber acts as a float, so that in the event of stoppage inthe waste pipe below the nxture inlet, the accumulation of Vwater on topvof the stoppage will result Vinv raising the iiapnvalve to closedposition in engagement with theseat 19.

A clean out opening is provided in Vthebody 10 and closed with aremovable plug 24, this clean out opening being provided in the zone ofthe Vlateral chamber 15 and'servingA also as a means -forpermitting'accessl to the gate valveforV any 7o:

removal or replacementr of the latterjthat, mayV be desired.

VThe inclined bottom Wallr25 of 4thechamber 15 1 is provided with aninternally threaded hole 26 Y to provide a means for connection of theWater 75 pipe 27 which is tappedin on the service line 28 and whichincludes a control valve 29. When the control' Valve is open, water fromthe service line enters the fitting behind the flap valve 10` l to raisethe latterto closed position and, lling the Waste pipe von top of anystoppage therein, will finally, by reason of the pressure supplied bythe service line, dislodge the stoppage, transferring. it to` the `sewerwhere it may be readilycarried om, l Y

The air chamber 23 is not anessential element of the flap valve sincethe latter should always be open unless there is some stoppage in thewastef line which may be readily disposed of as aforesaid. However, theair chamber is a useful ele-v ment in that it will automatically. effectclosure of the flap valve in the event of stoppage in the Wasteline andthe accumulation of :water on top .f

thereof, so that in the event that the stoppage is at a point adjacentthe chamber 15 it may not 95 accumulate to obstruct the valve andprevent it being shifted to closed position when the ilush f While shownin connection with a sink, `the fitting may be employed on all plumbingfixtures, such as are used in bathrooms, kitchens or what' not and willthus serve as ameans for erectivej ly and quickly removing any stoppagein the soil 'l or waste pipes. I f c The invention having been`described, what is 105 Y claimed as new and useful is:

1.' A vent stack tting comprising aV tubular body having a lateral inletintermediate its ends and a lateral chambered enlargement` belowtheplane of the inlet, the body 'being interiorly 110 formed insubstantially the plane of the top of the enlargement with a valve seat,a flap valve having a pivotal mounting Within and adjacent the top ofthe enlargement so that Ait may be fswung into engagement with the valveseat or hang Wholly Within theV enlargement out of obstructing positionAwith reference to the bore of rab the body, the valve being .formed witha water- Vtightair ehamber to insure its being engaged With the seat bya rising Water level in the body, and a high pressure inlet tap incommunication with the interior` of the body through a Wall in cent thetop of the enlargement `so that it may be lswung' into engagementWith'the valve seatV or hang Wholly Within the enlargement out of0bstruoting position with reference tothe bore of l the body, the valvebeing formed with a Water-l tight air chamber to insureits being engagedwith the seat by a rising Water level in the body.

thatfwall of the enlargement behind the valve being parallel with theaxis ofthe body from the top 'of the enlargement to an intermediatepointV inthe heightvof the enlargement and thereafter inoliningtowardsthe body and merging with the Wall thereof, and a high presure inletcapl Vcommunicatinginteriorly With the bodyfthvrough` the inclined'wallportion of the'enlargement, so that a stream directed into the bodythrough said tap will be .directed diagonally upward across the bore ofthe body but against Vthe ValveiWhen the latter is in its pendentposition. f

l ,A HIRAM HAMMOND HOUSE.' ,4

